Perfect pseudoperiodic binary arrays

Arrays with good correlation properties are required for code-departure imaging, as well as for other applications of two-dimensional signal processing. Since binary arrays with perfect periodic autocorrelation are rather sparse. `pseudoperiodic´ binary arrays are discussed. The transmitted binary array is correlated in the receiver with the same array which is surrounded periodically by similar ternary arrays. A construction method is presented that permits the construction of such `pseudoperiodic´ binary arrays with perfect correlation properties for all sizes p₁^a1×p ₂^a2 (p₁, p₂ odd prime, a₁, a₂=1, 2, 3...)